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Nervous System Part 1 Review

Total questions: 49

Worksheet time: 45mins

Name
Class
Date
1.
Which ions are involved in an action potential?
a)
Na; Cl
b)
Na; K
c)
K; Cl
d)
Na; Ca
2.
What is the normal resting potential of a neuron cell membrane?
a)
+40mV
b)
-30mV
c)
+55mV
d)
-70mV
3.
Which is the correct order of events in depolarisation then repolarisation? 
a)
Sodium channels close, potassium channels open
b)
Sodium channels open, potassium channels open, 
c)
Sodium channels open, potassium channels close
d)
Potassium channels open, sodium channels open
4.
At which point on the diagram does depolarisation of the axon occur? 
a)
A
b)
B
c)
C
d)
D
5.
The sodium potassium pump restores the resting potential. By which process does this work? 
a)
Osmosis
b)
Diffusion
c)
Facilitated diffusion
d)
Active transport
6.
What is the insulating membrane that surrounds parts of the axon that helps to protect & propagate action potential?
a)
Axon
b)
Dendrites
c)
Node of Ranvier
d)
Myelin Sheath
7.
When a neuron is not engaged in an impulse.
a)
Resting potential
b)
Action potential
c)
Neural potential
d)
Synaptic potential
8.
When a neuron is resting, the inside of the axon has a ____________ charge.
a)
positive
b)
negative
9.
A membrane potential becoming less negative is called
a)
hyperpolarization
b)
depolarization
c)
repolarization
d)
polarization
10.
In resting potential, neurons have more _________ on the outside of the cell membrane.
a)
K+
b)
NaCl
c)
Na+
d)
Cl-
11.
In resting potential, neurons have more ____________ on the inside of the cell membrane.
a)
NaCl
b)
Na+
c)
K+
d)
Cl-
12.
Describes the fact that a neuron fires at the same intensity despite the intensity of the stimulus.
a)
Threshold
b)
Repolarization
c)
All or None Principle
d)
Action Potential
13.

What number(s) on the graph represents the THRESHOLD level of stimulus?

a)

1 and 5

b)

2

c)

3

d)

6

14.

What are the Neurons?

a)

Units that constitute the nervous system.

b)

Units that constitute the brain tissue.

c)

Blocks of tissue that constitute the endocrine system.

d)

Blocks or tissues that constitute the organs of the body system.

15.

What is the function of the nerve cells?

a)

They are responsable of your defense mechanism.

b)

They transmit signals or messages to other neurons, organs or glands.

c)

They transmit substances to your endocrine system to produce hormones.

16.

What is the name of the part of the neuron that is pointed out in the image?

a)

Cell Body (Soma)

b)

Axon

c)

Myelin Sheats

d)

Dendrites

17.

What is the name of the part of the neuron that is pointed out in the image?

a)

Myelin sheaths

b)

Cell Body (Soma)

c)

Axon

d)

Dendrites

18.

What is the name of the part of the neuron that is pointed out in the image?

a)

Myelin Sheats

b)

Axon

c)

Dendrites

d)

Cell Body (Soma)

19.

What is the name of the part of the neuron that is pointed out in the image?

a)

Myelin Sheats

b)

Cell Body (Soma)

c)

Dendrites

d)

Axon

20.

The neuron's life support that contains the nucleus is:

a)

Soma

b)

Dendrites

c)

Myelin Sheaths

d)

Axon

21.

The protective fatty tissue that speeds up the transmission of messages is:

a)

Myelin Sheaths

b)

Axon

c)

Dendrites

d)

Soma

22.

The extension that transmit electrical impulses from the som to other parts is:

a)

Myelin Sheaths

b)

Soma

c)

Dendrites

d)

Axon

23.

The extensions that obtain the messages from other cells are:

a)

Myelin Sheats

b)

Axon

c)

Dendrites

d)

Soma

24.

What type of neuron is represented on the image?

a)

Motor Neuron

b)

Interneuron

c)

Sensory Neuron

25.

What type of neuron is represented on the image?

a)

Motor Neuron

b)

Interneuron

c)

Sensory Neuron

26.

What type of neuron is represented on the image?

a)

Motor Neuron

b)

Interneuron

c)

Sensory Neuron

27.

Type of neuron that perceive information about your environment.

a)

Motor Neuron

b)

Interneuron

c)

Sensory Neuron

28.

Type of neuron located only in the brain and spinal cord that pass impulses from one neuron to another.

a)

Motor Neuron

b)

Interneuron

c)

Sensory Neuron

29.

Type of neuron that sends nerve impulses to muscles and gland, by the command of other neurons.

a)

Motor Neurons

b)

Interneurons

c)

Sensory Neurons

30.

What type of neuron is A?

a)

Sensory

b)

Inter

c)

Motor

31.

What type of neuron is C?

a)

Sensory

b)

Inter

c)

Motor

32.

Name an effector in this diagram.

a)

A

b)

B

c)

D

d)

E

e)

F

33.

Select two examples of effectors.

a)

Neuron

b)

Gland

c)

Muscle

d)

Receptor

34.

Which statement best describes a reflex?

a)

Slow response that you have to think about

b)

Rapid response to protect body from harm

35.
Salivary glands are an example of ...
a)
A receptor
b)
A relay
c)
A detector
d)
An effector
36.
What is the neuron found only in the spinal cord?
a)
Relay
b)
Sensory
c)
Motor
d)
Reflex
37.
What makes up the CNS
a)
brain and spinal cord
b)
brain and neurons
c)
brain
d)
spine and neurons
38.

_____ neurons carry messages away from the central nervous system and out to muscles or glands. The RED neuron in diagram.

a)

sensory

b)

motor

c)

inter

d)

central

39.

Which type of neuron causes a muscle to contract in a reflex arc?

a)

Motor Neuron

b)

Sensory Neuron

c)

Interneuron

d)

Effector

40.

Where would the nerve impulse start in this reflex arc?

a)

A

b)

C

c)

D

d)

E

41.

What type of neuron is A?

a)

Sensory

b)

Inter

c)

Motor

42.

Which is the correct order of neurons in a reflex arc?

a)

Sensory neuron, motor neuron, relay neuron

b)

Relay neuron, sensory neuron, motor neuron

c)

Sensory neuron, relay neuron, motor neuron

43.

What is the final component of a reflex arc?

a)

Effector

b)

Receptor

c)

Afferent Pathway

44.

Which number represents the stimulus?

a)

1

b)

2

c)

3

d)

4

45.

Which number represents the effector?

a)

4

b)

5

c)

6

d)

7

46.

Which number represents the sensory neuron?

a)

3

b)

4

c)

5

d)

7

47.

Which numbers represents the neurons in a reflex arc?

a)

3

b)

4

c)

5

d)

7

48.

In a reflex arc, the sensory neuron leads to the ___________ and the motor neuron leads to the __________

a)

Spinal cord, CNS

b)

CNS, muscle

c)

Spinal cord, muscle

d)

Muscle, CNS

49.

Reflex actions are important because

a)

They provide a quick, involuntary response

b)

They prevent injury

c)

They are essential to the survival of organisms

d)

All of the above

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